Question

7 thick white fumes are formed when a glass rod dipped
in NH,OH is brought near the mouth of a bottle full
of HCl gas.​

Answer 1

HCl+NH4OH→White fumesNH4Cl+H2O

Explanation:

When ammonium hydroxide is brought near the mouth of HCl, dense white fumes are formed due to the formation of ammonium chloride.

Answer 2

When ammonium hydroxide (NH4OH) reacts with hydrochloric acid (HCl), white colour fumes of ammonium chloride (NH4Cl)is formed.

Reaction involved is: NH4OH + HCl → NH4Cl + H2O.

HCl gas is evolved when a salt containing chloride ion is treated with concentrated sulphuric acid. So, this can be confirmed by dipping a rod in ammonium hydroxide and brought near to the mouth of test tube. and white dense fumes are observed.

${ \huge\rm \pink {(๑♡⌓♡๑)H}\rm \blue {A} \rm \purple {N}\ \rm \green{J} \rm\red {U}\ \rm \orange {H} \rm{U} \rm \gray{I(๑♡⌓♡๑)}}$